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Coordinated regulation of Arabidopsis thaliana development by light and gibberellins

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  • Suhua Feng

    (Cellular and Developmental Biology, Yale University, New Haven, Connecticut 06520-8104, USA
    National Institute of Biological Sciences, Zhongguancun Life Science Park, Beijing 102206, China
    Present address: Howard Hughes Medical Institute, University of California at Los Angeles, Los Angeles, California 90095-1606, USA.)

  • Cristina Martinez

    (Cellular and Developmental Biology, Yale University, New Haven, Connecticut 06520-8104, USA)

  • Giuliana Gusmaroli

    (Cellular and Developmental Biology, Yale University, New Haven, Connecticut 06520-8104, USA)

  • Yu Wang

    (Peking–Yale Joint Center for Plant Molecular Genetics and Agrobiotechnology, and National Laboratory for Protein Engineering and Plant Genetic Engineering, College of Life Sciences, Peking University)

  • Junli Zhou

    (National Institute of Biological Sciences, Zhongguancun Life Science Park, Beijing 102206, China)

  • Feng Wang

    (National Institute of Biological Sciences, Zhongguancun Life Science Park, Beijing 102206, China)

  • Liying Chen

    (National Institute of Biological Sciences, Zhongguancun Life Science Park, Beijing 102206, China)

  • Lu Yu

    (National Institute of Biological Sciences, Zhongguancun Life Science Park, Beijing 102206, China)

  • Juan M. Iglesias-Pedraz

    (Centro Nacional de Biotecnología-CSIC, Campus Universidad Autónoma de Madrid)

  • Stefan Kircher

    (Institut für Biologie II/Botanik, Albert Ludwigs Universität)

  • Eberhard Schäfer

    (Institut für Biologie II/Botanik, Albert Ludwigs Universität)

  • Xiangdong Fu

    (Institute of Genetics and Developmental Biology, Chinese Academy of Sciences)

  • Liu-Min Fan

    (Peking–Yale Joint Center for Plant Molecular Genetics and Agrobiotechnology, and National Laboratory for Protein Engineering and Plant Genetic Engineering, College of Life Sciences, Peking University)

  • Xing Wang Deng

    (Cellular and Developmental Biology, Yale University, New Haven, Connecticut 06520-8104, USA
    National Institute of Biological Sciences, Zhongguancun Life Science Park, Beijing 102206, China
    Peking–Yale Joint Center for Plant Molecular Genetics and Agrobiotechnology, and National Laboratory for Protein Engineering and Plant Genetic Engineering, College of Life Sciences, Peking University)

Abstract

Gibberellins' light touch Many developmental processes in plants are regulated jointly by light and by the gibberellins, yet the molecular basis of cross-talk between the two is not fully understood. Two groups now report results that reveal a signalling cascade that contributes to coordinated plant growth regulation by light and gibberellins. In the absence of gibberellins, DELLA proteins inhibit the binding of the transcription factor PIF3 (a phytochrome-interacting protein) to gene promoters. Gibberellins trigger the degradation of DELLA proteins, thereby allowing PIFs to bind to their target promoters and regulate gene expression. Light acts via a photoreceptor to destabilize PIF4. Thus the DELLA proteins, and competitive interactions between members of the PIF family, appear to key components linking light to the gibberellins.

Suggested Citation

  • Suhua Feng & Cristina Martinez & Giuliana Gusmaroli & Yu Wang & Junli Zhou & Feng Wang & Liying Chen & Lu Yu & Juan M. Iglesias-Pedraz & Stefan Kircher & Eberhard Schäfer & Xiangdong Fu & Liu-Min Fan , 2008. "Coordinated regulation of Arabidopsis thaliana development by light and gibberellins," Nature, Nature, vol. 451(7177), pages 475-479, January.
    • Handle: RePEc:nat:nature:v:451:y:2008:i:7177:d:10.1038_nature06448
    DOI: 10.1038/nature06448
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    Cited by:

    1. Urszula Piskurewicz & Maria Sentandreu & Mayumi Iwasaki & Gaëtan Glauser & Luis Lopez-Molina, 2023. "The Arabidopsis endosperm is a temperature-sensing tissue that implements seed thermoinhibition through phyB," Nature Communications, Nature, vol. 14(1), pages 1-14, December.

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